RealSize

Evidence

Ran on Kiln's test stand (2026-11-04): RealSizeMod did not start: java.lang.NoClassDefFoundError: net/fabricmc/fabric/api/event/lifecycle/v1/ServerLifecycleEvents; RealSizeClient did not start: java.lang.NoClassDefFoundError: net/fabricmc/fabric/api/client/command/v2/ClientCommandRegistrationCallback.

What it needs from Kiln

• Mixin
• net.fabricmc.fabric.api.client.command.v2.ClientCommandRegistrationCallback
• net.fabricmc.fabric.api.client.command.v2.ClientCommands
• net.fabricmc.fabric.api.client.command.v2.FabricClientCommandSource
• net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.EndDataPackReload
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.ServerStarting
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.ServerStopped
• net.minecraft.commands.CommandSourceStack
• net.minecraft.commands.Commands
• net.minecraft.commands.Commands.CommandSelection
• net.minecraft.core.HolderSet
• net.minecraft.core.HolderSet.Named
• net.minecraft.core.RegistryAccess
• net.minecraft.core.RegistryAccess.Frozen
• net.minecraft.server.MinecraftServer
• net.minecraft.tags.TagKey
• net.minecraft.world.entity.EntityType
• net.minecraft.world.entity.EntityTypes
• net.minecraft.world.entity.Mob
• net.minecraft.world.entity.MobCategory
• net.minecraft.world.entity.ai.attributes.AttributeInstance.Packed
• net.minecraft.world.entity.ai.attributes.AttributeMap
• net.minecraft.world.entity.ai.attributes.AttributeModifier
• net.minecraft.world.entity.ai.attributes.AttributeModifier.Operation
• net.minecraft.world.entity.ai.attributes.DefaultAttributes
• net.minecraft.world.entity.animal.fish.WaterAnimal
• net.minecraft.world.entity.animal.nautilus.AbstractNautilus
• net.minecraft.world.entity.monster.Guardian
• net.minecraft.world.phys.AABB
• Registry.get()
• Registry.getOptional()
• Registries.ENTITY_TYPE
• ServerLevel.getAllEntities()
• LivingEntity.getAgeScale()
• LivingEntity.getAttributes()
• LivingEntity.getScale()
• LivingEntity.getType()
• AttributeInstance.addTransientModifier()
• AttributeInstance.getModifier()
• and 1 more

On the roadmap: Minecraft's libraries and client API (0.2), Code next to data (0.3), Mixin (0.5)

In the author's words

Configurable mob sizes with real hitbox changes, plus optional client fixes for tiny-mob visibility and walking animations.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file realsize-1.2.0.jar. The scan reads the mod's classes; it does not run them.